A woman driving a red Subaru Legacy said she lost control of her vehicle and struck the center median before hitting the back of a truck.

The driver of the truck, which was equipped with a sander and plow for Nick's Landscaping in Southborough, said the accident caused some damage to the rear of his vehicle.

The woman remained in her station wagon conscious and alert while waiting for paramedics. The car had deployed its airbags and she said there was a large amount of broken glass inside. Her car came to a stop facing the wrong way on the side of Route 9 just outside the former Friendly's at 96 Turnpike Road.

She was extricated from the vehicle by paramedics and transported to a nearby hospital.

Westborough police urge drivers to stay off the roads, and Gov. Deval Patrick has instituted a driving ban set to begin at 4 p.m. Friday. Any non-essential vehicles on the road could face penalties up to one year in prison and a fine of $500.

Westborough police have also declared a "snow emergency" beginning at 6 p.m. Friday, along with a winter parking ban. Any vehicle parked in a public roadway and affecting snow removal will be ticketed and towed, said Police Chief Alan Gordon.